In an academic context, plagarism enforcement is less about the theft of ideas (which are no less stolen when simply regurgitated with a citation next to them),

In an academic context, plagarism enforcement is less about the theft of ideas (which are no less stolen when simply regurgitated with a citation next to them), than as it is about establishing a chain of influence. If I write an article that uses someone else's ideas, then I cite them, so that a reader can go "huh, that idea's interesting, let me go see where that came from" and then they can see what influenced those ideas by that papers citations and so on and so on. The fact that students don't have this concept of intellectual chain of custody hammered into their skulls is a failure of the education system. Citing quotes is obvious, but in this day and age it's probably the least necessary. I can Google an exact quote and find exactly the article it came from. Much harder to search is provinance of paraphrased idea or general concept, or the source of a factual statement that I find dubious.